kelly complained to a friend in the fbi which led to an investigation with unexpected consequences. the fbi discovered e-mail exchanges between broadwell and petraeus showing she was also his mistress. petraeus resigned from the cia just days after the election. joe johns, cnn, washington. >> and you won't want to miss our top ten of 2012 special as cnn revisits the stories that captured the country's attention. it airs right here on cnn sunday night at 8:00 eastern. >>> well, from sharing photos to navigating through traffic, smartphone apps this year helped us to do a lot of great things. we'll count down the top four of the year and tell you which apps to look out for in 2013. tyeah, its the galaxy note ii.re great. you can do two things at the same time. you can watch videos and text. or you could watch the earnings report and take notes, like we're supposed to. so... can i get it? yeah. okay either of you put together the earnings report yet? yes, me totally. what? why don't you tackle the next quarter. you eat yet? polynesian? pu pu platter? yup! keep up the good work. i will